M334075 八 '新型說明： 【新型所屬之技術領域】 r\ 本新型是有關於-種載具或機動車，特別是指一種以 滾動軸心體為動力之載具或機動車。 【先前技術】 兑參閱圖1、2,是現有一種腳踏車1，該聊踏車具有一 則車輪11、一後車輪I2，及_可帶击 一 帶動忒後車輪12樞轉的傳 動早7013。該後車輪12是一半徑為1驅動輪，且血一地 面G的接觸摩擦力為打。該動 ，、M334075 八' New description: [New technical field] r\ This new type is related to a vehicle or a motor vehicle, especially a vehicle or motor vehicle powered by a rolling shaft. [Prior Art] Referring to Figures 1 and 2, there is a bicycle 1 having a wheel 11, a rear wheel I2, and a slidable early movement 7013 of the rear wheel 12 pivoting. The rear wheel 12 is a drive wheel having a radius of 1, and the contact friction of the blood-surface G is a hit. The move,
.,扨早兀13具有一可藉由踩踏 方式帶動的前鏈輪131、一可I 後車 同轴轉動的後 133W。 —套接於㈣、後鏈輪⑶、132之間的鏈條 由力學分析可知，當該自杆鱼 ^ ^ 田忍自仃車1刖進時，該後車輪12 〇 滾動’此時’該摩擦力η將對後車輪中心 為-許=1針的扭矩（Torque)。本說明書中，將該扭矩稱 1絲Γ£tl (如圖2箭頭所示），誠界扭矩11的大小 二：fl與半徑Γ的乘積：tl==flxre此外，藉由踩踏 方式帶動該驅動單亓η 時針驅動扭矩t二也將對該後輪中心01產生另-順 動扭❹大於逆=二箭頭所示) f針的臨界扭矩ti時，該自行車1即可加 、二，且當該驅動扭矩T1與臨界扭矩tl的差值（T1 —tl =該ΐ車輪12的輪出扭力也愈大。 該後==的明半7二’於該摩擦力fl不變的條件下，當 Γ愈小，該臨界扭矩tl也將愈小，該驅 M334075 動扭矩T1與臨界扭矩tl的差值（τι —tl)將愈大。因此， 當踩踏力量不變的狀況下（驅動扭矩T1維持不變），若將 該後車輪12的半徑r縮小，該後車輪12可輸出更大的扭力 〇 然而，目前市面上大部分的車輛，其後車輪12是具有 、 大輪徑，雖然該後車輪12的輪徑較大可提高車速，但卻也 * ^南了 5亥®*界扭矩tl ’該驅動扭矩T1與臨界扭矩tl的差值 (T1一 tl)因此變小，使該驅動輪所輸出的扭力也變小，踩 ’踏較費力。 【新型内容】 因此，本新型之目的，即在提供一種具有高輸出扭力 且更省力的以滾動軸心體為動力之載具或機動車。 於是，本新型以滾動軸心體為動力之載具或機動車包 含一車體、一滾動抽心體，及一驅動單元。 該滾動軸心體是樞設於該車體且接觸地面，且該滾動 • 軸心體的直徑是介於5公分至20公分之間。 ' 該驅動單元具有一與該滚動軸心體同軸樞接且連動的 • 從動輪’及一用來帶動該從動輪樞轉的主動輪，該主動輪 ' 的直徑是大於該從動輪的直徑’且該從動輪的直徑是小於 、 «動軸心㈣隸’該主動輪藉由帶動該從動輪轉動， 使該滾動軸心體樞轉並驅動該車體移動。 纟新型的有益功效在於：藉由將該滾動軸心體的直徑 縮小，以提高該滚動軸心體的輪出扭力，進而達成省力的 功效。 M334075 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖3與圖4，本新型以滚動轴心體為動力之載具或 機1動車之弟一較佳實施例是包含一車體2、一車輪單元3， 及一驅動單元4。本實施例中，該載具是一自行車。 該車輪單元3是樞設於該車體2,並具有一前車輪31 ，及一樞設於該車體2且接觸地面G的滾動軸心體32，該 滾動軸心體32具有—車輪直徑D，當該滾動軸心體32於地 面G滾動時，該滾動軸心體32與地面G之間具有一接觸摩 擦力卜本實施例中’該滾動軸心體32是該自行車的後輪 ，由於該車輪直徑D較小而僅為15公分（em)，所以當該 自行車移動時，該滾動軸心體32如同是—個在地面〇上滚 動的滾軸體。 該驅動單it 4是用來帶動該滾動軸心體32樞轉，藉 驅動該車體2移動，因&，該滾動軸心體32即為該二 的驅動輪。該驅動單元4具有—與該滾動軸心體32同軸承 接且連動的從動輪41、二踏板42、一可被該等踏板42 動樞轉的主動輪43，及一套接於該從動輪Μ與該 43之間的傳動鏈條44。其中，該主動輪43 1有一^ 徑CH，該從動輪41具有一第二直㈣，該主動輪4… M334075 一直^ dl是大於該從動輪，的第二直徑d2，且該 41的第二直徑d2是小於 " 、μ滾動軸心體32的車輪直徑D。 本實施例中’ $主動輪43、從動輪* 主動輪43的第一直俨θ 疋鏈輪該 、 1疋該滾動軸心體32車輪直徑D的 2 4口大’該滾動麵心體3 2沾由u 直捏们之比值是0.7。 D與該從動輪41第二The 扨13 has a front sprocket 131 that can be driven by pedaling, and a rear 133W that can be rotated coaxially. - The chain that is sleeved between (4) and the rear sprocket (3), 132 is mechanically analyzed. When the self-driving fish ^ ^ Tian Ren self-driving car 1 is pushed in, the rear wheel 12 〇 rolls 'this time' the friction The force η will be -1 = 1 torque (Torque) for the center of the rear wheel. In this specification, the torque is referred to as 1 Γ £ (as shown by the arrow in Fig. 2), and the size of the solid torque 11 is 2: the product of fl and the radius :: tl == flxre. In addition, the drive is driven by pedaling. When the single-turn η hour hand drive torque t2 will also produce a further-spinning twist on the rear wheel center 01 greater than the reverse-two arrow) f-key critical torque ti, the bicycle 1 can be added, two, and The difference between the driving torque T1 and the critical torque t1 (T1 - t1 = the greater the wheeling torque of the wheel 12 is. The latter half of the rear = 7 is not changed under the condition that the frictional force fl is constant. The smaller the heel, the smaller the critical torque tl will be, and the larger the difference (τι_tl) between the dynamic torque T1 and the critical torque t1 of the drive M334075. Therefore, when the pedaling force is constant (the drive torque T1 is maintained) Unchanged), if the radius r of the rear wheel 12 is reduced, the rear wheel 12 can output a larger torque. However, most of the vehicles currently on the market, the rear wheel 12 has a large wheel diameter, although the rear wheel The larger wheel diameter of 12 can increase the speed of the car, but it is also * ^ South 5 Hai ® * boundary torque tl 'The driving torque T1 and Pro The difference (T1 - t1) of the torque tl is thus small, so that the torque outputted by the driving wheel is also reduced, and the stepping is more laborious. [New content] Therefore, the object of the present invention is to provide a high output. Torque and less labor-saving vehicle or motor vehicle powered by a rolling shaft body. Thus, the vehicle or the motor vehicle powered by the rolling shaft core body comprises a vehicle body, a rolling core body, and a driving device. The rolling axis body is pivoted on the vehicle body and contacts the ground, and the diameter of the rolling shaft body is between 5 cm and 20 cm. The drive unit has a rolling axis a coaxially coupled and interlocking driven wheel and a driving wheel for driving the driven wheel, the diameter of the driving wheel is larger than the diameter of the driven wheel and the diameter of the driven wheel is smaller than The shaft (4) is driven by the driving wheel to pivot the core body and drive the body to move. The novel beneficial effect is that: by reducing the diameter of the rolling shaft body, To improve the roll-off twist of the rolling shaft body The above-mentioned and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the present invention. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. Referring to FIG. 3 and FIG. 4, the present invention is powered by a rolling shaft body. A preferred embodiment of the utility model comprises a vehicle body 2, a wheel unit 3, and a driving unit 4. In this embodiment, the vehicle is a bicycle. The wheel unit 3 is pivoted to The vehicle body 2 has a front wheel 31 and a rolling axial body 32 pivotally mounted on the vehicle body 2 and contacting the ground G. The rolling shaft core body 32 has a wheel diameter D, and the rolling shaft core body 32, when rolling on the ground G, there is a contact friction between the rolling axis body 32 and the ground G. In the embodiment, the rolling axis body 32 is the rear wheel of the bicycle, and the diameter D of the wheel is small. Only 15 cm (em), so when it is self As the vehicle moves, the rolling axis body 32 acts as a roller body that rolls on the floor. The driving unit it 4 is used to drive the rolling shaft body 32 to pivot, and the driving body 2 is moved. Because of the &, the rolling shaft body 32 is the driving wheel of the two. The driving unit 4 has a driven wheel 41 that is coupled to and coupled with the rolling shaft core body 32, two pedals 42, a driving wheel 43 that can be pivoted by the pedals 42, and a set connected to the driven wheel rim. A drive chain 44 between the 43 and the 43. Wherein, the driving wheel 43 1 has a diameter CH, the driven wheel 41 has a second straight (four), the driving wheel 4... M334075 is always greater than the second diameter d2 of the driven wheel, and the second of the 41 The diameter d2 is smaller than the wheel diameter D of the ", the rolling axis body 32. In the present embodiment, the first straight 俨 θ sprocket of the driving wheel 43 and the driven wheel 4 is the sprocket of the driving wheel 43. The 轴 疋 of the rolling shaft body 32 has a diameter D of the wheel D. The rolling surface body 3 2 The ratio of the dip by u is 0.7. D and the second follower wheel 41
動’藉由該傳動鏈條44的傳動，該從動 被 並帶動該滾動軸⑽32轉動，進而驅動該自行車前t 由力學分析可知，卷呤ώ ， „ θ ,爾遠自行車前進時，該滾動軸心體 疋目對地面G滾動’此時，該摩擦力£將對該滚動轴心 體32的一車輪中心〇產生逆時針方向的力矩（To寧e)， 本說明書將該扭蚊義為—臨界扭矩t (如圖4箭頭所干 ’該臨界扭矩t的大小即為該摩擦力f與車輪半徑（d/^ 的乘積： t=fX(D/2)。此外，使用者踩踏該等踏板42帶動 该從動輪4卜也將對該車輪中心〇產生—順時針方 動扭矩τ (如圖4箭頭所示）。 的15 由於該滾動軸心體32的車輪直徑D僅為15公分，比 現有自行車1 (見圖的驅動輪12具有更小的車輪直和 ，使本創作的該滾動軸心體32 (驅動輪）之臨界扭矩（2 幅降低。因此，當該驅動扭矩τ維持不變的狀況下（亦即 使用者踩踏該等踏板42的力量不變），該驅動扭矩τ與臨 界扭矩t的差值（τ—t)因而變大，相較於現有的自行車1 的後車輪12，本創作的該滚動軸心體32可以輸出極大恤 M334075 力0 由於該主動輪43的第一直徑dl是大於該從動輪41的 • 第一直徑，且由於該從動輪41是與該滾動軸心體32同 軸樞轉，因此，當該主動輪43轉j圈時，該滾動軸心體Μ 將轉動1圈以上而提高了該滾動軸心體32的轉速。此外， 也因為該滾動軸心體32可輸出極大的扭力，所以當使用者 • 踩踏該等踏板42帶動該主動輪43樞轉時，將使該車體2 魯 I動扦該滾動軸心體32因輪出高扭力且轉速提高而可產生 驅動輪與地面G摩擦空轉的情形。 經由以上的說明，可再將本新型的優點歸納如下： 一、藉由將該滾動軸心體32設計為該車體2的驅動輪 爽且將該滾動軸心體32的車輪直徑D縮小而有效降低該摩 擦力f對該車輪中心〇所產生的臨界扭矩t，於該驅動扭矩 持不變的狀況下，該驅動扭矩τ與臨界扭矩t的差值（ T〜t)、將變大’所以可有效提高該滾動軸心體32的輸出扭 • 力J或者是當降低該輸出扭矩T的狀況下（亦即使用者降 ' 低該等踏板42的踩踏力量），將可達成省力的功效。 • 认二、藉由將該主動輪43的第一直徑dl設計為大於該 、 從動輪41的第二直徑d2,可提高該滾動軸心體32的轉速 •，也藉由該滾動軸心體32的高扭力，而高扭力與高轉速將 使該滾動軸心體32與地面G發生摩擦空轉的情形，可大大 増加駕馭者的駕駛樂趣。 &如圖5所不’為本新型的-第二較佳實施例，該第二 X佳實加例疋類似於該第―較佳實施例，其差異之處在於 M334075 :該機動車是一電動休閒車（機動車），且該驅動單元4,具 有/、亥滾動軸心體32同軸樞接且連動的從動輪41，、一 驅動馬達42，、一可被該驅動馬達42，帶動樞轉的主動輪43, 及套接於該從動輪4Γ、主動輪43,之間的傳動鏈條44· ’ a亥主動輪43’是樞設於該驅動馬達42,的轉軸。 本實施例中，該從動輪41，、主動輪43,均是一鏈輪，該 滾動軸心體32是該電動休閒車的後輪，且該滾動軸心體32 的車輪直徑D為12公分。 如此，該第二較佳實施例亦可達到與上述第一較佳實 施例相同的目的與功效。 如圖6所示，為本新型的一第三較佳實施例，該第三 較佳實施例是類似於該第二較佳實施例，其差異之處在於 .該驅動單元4"具有一與該第二車輪32同軸樞接且連動的 從動輪41”、一驅動馬達42"、一主動^輪43"，及一被該驅 動馬達42"帶動且可帶動該主動輪43"樞轉的齒輪總成44，， 。邊主動輪43"是直接與該從動輪41，，嚙合，該驅動馬達 42"可藉由該齒輪總成44,，間接帶動該從動輪41"樞轉，進而 使該車體2移動。本實施例中，該從動輪41，，、主動輪43，， • 均是一齒輪。 • 如此’該第三較佳實施例亦可達到與上述第二較佳實 施例相同的目的與功效。 值得說明的是，本創作可有以下的設計變化： 一、本說明書的各實施例中，該滾動軸心體32的車輪 直徑D分別是15公分或ι2公分，惟實際設計生產時，該 10 M334075 車輪直徑d可設計為5公分至2G公分的範該滚動 軸心體32的車輪直經D愈小，則該載具或機動車可提供的 扭力愈大。 二、 本創作該從動輪41、41,、41"的第二直徑们盘該 滾動軸心體32車輪直# D之比值是Q7，實際上，口要θ 該驅動單W不與地面G發生干涉的條件下，該從動輪= 、41’、41”的第二直徑d2與該滾動軸心體μ車輪直徑〇之 比值可以設計介於0.6至小於i的範圍之間。 三、 本創作的該載具分別是以自行車、電動休閒車為 實施例，然而，舉凡需要高輸出扭力的載具或機動車（例 如載重均可運用本創作的概念，顯軸輪的輪徑縮 小，以長:鬲驅動輪的輸出扭力。 四、 上述各實施例的該驅動單元4、4，、4·，分別是藉由 人力為輸出動力帶動該從動輪41、該驅動馬達仏^ 輸出動力帶動該從動輪41，、41,1，然而，該驅動單元4也; 使用-動力引擎為輸出動力帶動一皮帶輪（圖未示），或者 其它方式傳動’本創作仍可達成高輪出扭力的相同功效。 歸納上述，本新型之以滾動軸心體為動力之載且或機 動車’是藉由將該驅動輪的車輪直徑D縮小至5公分、至 ，分之間，以提高該滾動轴心體32的輪出扭力，^藉由將 =主動輪43、43’、43’’的第一直徑dl設計成為大於該從動 4^41，、41^第二直徑⑽，以達成高輪出扭力及省力 $予又鳥馭的樂趣’故確實能達到新型之目 的0 11 M334075 准乂上所述者’僅為本新型之較佳實施例而已，當不 - 此以此限定本新型實施之範圍，即大凡依本新型申請專利 • ⑯圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 • 圖1是現有一種自行車的示意圖，說明一前、後車輪 具有相同的輪徑； 圖2是一示意圖，說明現有自行車的後車輪之受力狀 • 態； 圖3疋本發明以滾動軸心體為動力之載具或機動車之 一第一較佳實施例的示意圖； 圖4是一示意圖，說明該第一較佳實施例的一第二車 輪的受力狀態； 圖5是本發明以滾動軸心體為動力之載具或機動車之 一第二較佳實施例的示意圖；及 舉 圖6是本發明以滾動軸心體為動力之載具或機動車之 」 ~第三較佳實施例的示意圖。 12 M334075 【主要元件符號說明】 2 ··…· …·車體 3…… •…車輪單元 31 ••… •…前車輪 32••… •…滚動軸心體 4 ··…· …·驅動單元 41 ••… …·從動輪 42 …·· •…踏板 43…" …·主動輪 44…·. …·傳動鏈條 4,…*·· •…驅動單元 41，…· •…從動輪 42,…· …·驅動馬達 43，*·" •…主動輪 44,— •…傳動鏈條 4!!........、驅動單元 41".......從動輪 42".......驅動馬達 4 3 μ · *.....主動輪 44"……·齒輪總成 dl………第一直徑 d2.......••第二直徑 t.........臨界扭矩 T........驅動扭矩 f.........摩擦力 G..........地面 Ο ·…·.....車輪中心 D•…·"…車輪直徑 13By the transmission of the transmission chain 44, the driven is driven to rotate the rolling shaft (10) 32, thereby driving the bicycle front t. According to the mechanical analysis, the rolling 呤ώ, θ θ, when the bicycle is advanced, the rolling shaft The heart is rolling toward the ground G. At this time, the friction force will generate a counterclockwise moment (To N) in the center of a wheel of the rolling shaft body 32. - the critical torque t (as shown by the arrow in Fig. 4) The magnitude of the critical torque t is the product of the frictional force f and the wheel radius (d/^: t = fX (D/2). In addition, the user steps on the same The pedal 42 drives the driven wheel 4 to also generate a clockwise torque τ (shown by the arrow in Fig. 4) for the center of the wheel. 15 Since the wheel diameter D of the rolling shaft body 32 is only 15 cm, Compared with the existing bicycle 1 (see the drive wheel 12 of the figure, there is a smaller wheel straightness, so that the critical torque of the rolling shaft body 32 (drive wheel) of the present creation is reduced (2 frames are reduced. Therefore, when the driving torque τ is maintained Under the changed condition (that is, the user's power to step on the pedals 42 does not change), the drive The difference (τ_t) between the torque τ and the critical torque t is thus increased. Compared to the rear wheel 12 of the existing bicycle 1, the scrolling shaft body 32 of the present invention can output a maximal shirt M334075 force 0 due to the initiative. The first diameter dl of the wheel 43 is larger than the first diameter of the driven wheel 41, and since the driven wheel 41 is coaxially pivoted with the rolling axis body 32, when the driving wheel 43 is rotated by j, the The rolling shaft body Μ will rotate more than one turn to increase the rotational speed of the rolling shaft body 32. In addition, since the rolling shaft body 32 can output a great torque, when the user steps on the pedals 42 When the driving wheel 43 pivots, the body 2 can move the rolling shaft core body 32 to generate a high torque of the wheel and the rotation speed is increased, so that the driving wheel and the ground G can be frictionally idling. Through the above description, The advantages of the present invention are summarized as follows: 1. By designing the rolling axial body 32 as the driving wheel of the vehicle body 2 and reducing the wheel diameter D of the rolling shaft body 32, the frictional force f is effectively reduced. The critical torque t generated by the center of the wheel, the drive In the case where the moment is constant, the difference (T~t) between the driving torque τ and the critical torque t will become larger, so that the output twisting force J of the rolling axis body 32 can be effectively increased or when the In the case of the output torque T (i.e., the user lowers the pedaling force of the pedals 42), the effort can be achieved. • The second diameter dl of the driving wheel 43 is designed to be larger than The second diameter d2 of the driven wheel 41 can increase the rotational speed of the rolling axial body 32, and also by the high torque of the rolling axial body 32, and the high torque and high rotational speed will cause the rolling axial body 32 to The frictional idling of the ground G can greatly enhance the driving pleasure of the driver. & As shown in Fig. 5, the second embodiment is similar to the first preferred embodiment, and the difference is that M334075: the motor vehicle is An electric recreational vehicle (motor vehicle), and the driving unit 4 has a driven wheel 41 coaxially and interlocked with the / rolling axis body 32, a driving motor 42, and a driving motor 42 The pivoting driving wheel 43, and the transmission chain 44· 'a driving wheel 43' sleeved between the driven wheel 4 and the driving wheel 43 are pivot shafts pivotally mounted on the driving motor 42. In this embodiment, the driven wheel 41 and the driving wheel 43 are both a sprocket, the rolling axis body 32 is the rear wheel of the electric recreational vehicle, and the wheel diameter D of the rolling axis body 32 is 12 cm. . Thus, the second preferred embodiment can achieve the same objects and effects as the first preferred embodiment described above. As shown in FIG. 6, a third preferred embodiment of the present invention is similar to the second preferred embodiment, and the difference is that the driving unit 4" has a The second wheel 32 is coaxially pivoted and linked to the driven wheel 41", a drive motor 42", an active wheel 43", and a gear driven by the drive motor 42" to drive the drive wheel 43" The armature 44, the side drive wheel 43" is directly engaged with the driven wheel 41, and the drive motor 42" can indirectly drive the driven wheel 41" to pivot by the gear assembly 44, thereby The vehicle body 2 is moved. In this embodiment, the driven wheel 41, the driving wheels 43, and are all gears. The third preferred embodiment can also achieve the same as the second preferred embodiment. The purpose and effect. It is worth noting that the present design can have the following design changes: 1. In each embodiment of the present specification, the wheel diameter D of the rolling shaft body 32 is 15 cm or ι 2 cm, respectively, but the actual design The 10 M334075 wheel diameter d can be designed during production. For a range of 5 cm to 2 G cm, the smaller the wheel straight D of the rolling shaft body 32, the greater the torque that the vehicle or the motor vehicle can provide. 2. The driven wheel 41, 41, 41 " The second diameter of the rolling shaft body 32 wheel straight # D ratio is Q7, in fact, the mouth θ the driving single W does not interfere with the ground G, the driven wheel =, 41 ', The ratio of the second diameter d2 of the 41" to the diameter 〇 of the rolling shaft body body μ can be designed to be between 0.6 and less than i. 3. The vehicle of this creation is an example of bicycles and electric recreational vehicles. However, for vehicles or vehicles that require high output torque (for example, the weight can be used in the concept of this creation, the wheel diameter of the shaft wheel The output torque of the drive wheel is reduced by the length of the drive wheel. 4. The drive units 4, 4, 4· of the above embodiments respectively drive the driven wheel 41 by the human power for output power, and the drive motor 仏 ^ output The driving force drives the driven wheels 41, 41, 1, however, the driving unit 4 also uses a power engine to drive a pulley (not shown) for the output power, or other means to transmit 'this creation can still achieve high torque The same effect. In summary, the present invention is based on the rolling shaft body power and or the motor vehicle 'by reducing the wheel diameter D of the driving wheel to 5 cm, between, and between points to improve the rolling axis The wheel-out torque of the body 32 is designed to be larger than the slave 4^41, 41^second diameter (10) by the first diameter dl of the = drive wheel 43, 43', 43" to achieve a high turn-off Torque and labor saving 'Therefore, it is indeed possible to achieve the new purpose. 0 11 M334075 The above description is only a preferred embodiment of the present invention, and if not - this limits the scope of the new implementation, that is, the patent application of this new type The simple equivalent changes and modifications made by the 16th and the new descriptions are still within the scope of this new patent. [Simplified illustration] Figure 1 is a schematic diagram of a conventional bicycle, showing a front and rear wheel with The same wheel diameter; FIG. 2 is a schematic view showing the state of the rear wheel of the existing bicycle; FIG. 3 is a first preferred embodiment of the vehicle or the vehicle powered by the rolling shaft core body of the present invention; Figure 4 is a schematic view showing the state of stress of a second wheel of the first preferred embodiment; Figure 5 is a second comparison of a vehicle or a motor vehicle powered by a rolling axis body BRIEF DESCRIPTION OF THE DRAWINGS FIG. 6 is a schematic view of a third preferred embodiment of a vehicle or a motor vehicle powered by a rolling shaft core body. 12 M334075 [Explanation of main component symbols] 2 ··... · ... • Car body 3... •...Wheel unit 31 ••... •...Front wheel 32••... •...Rolling shaft body 4 ·······Drive unit 41 ••...··Drive wheel 42 ...·· •...Pedal 43..." ...·Drive wheel 44...····Drive chain 4,...*·· •...Drive unit 41,...·•...Driver wheel 42,...···Drive motor 43,*·" ; •... drive wheel 44, — •... drive chain 4!!........, drive unit 41"....... driven wheel 42".......drive motor 4 3 μ · *..... drive wheel 44"...... gear assembly dl.........first diameter d2.......••second diameter t.........critical torque T........ drive torque f.........friction force G..........ground Ο ·...·.....wheel center D•...· "...wheel diameter 13